In an accompanying editorial, Edward Livingston of the University of Texas says the relatively small influence of volume on success of the transplants raises a big question.

VOA: standard.2010.07.14

And if we go ahead and square that, then what we get is a probability density, and specifically it's the probability of finding an electron in a certain small defined volume away from the nucleus.

我们得到的是，一个概率密度，它是，在核子周围，某个很小的,特定区域,找到电子的概率,所以它是概率密度。

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